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TAKATOSHI ISHIKAWA

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Patents Grantslast 30 patents

  • Information Patent Grant

    Screen image observing device and method
    • Patent number 6,549,641
    • Issue date Apr 15, 2003
    • Minolta Co., Inc.
    • Takatoshi Ishikawa
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Optical deflection device
    • Patent number 6,297,898
    • Issue date Oct 2, 2001
    • Minolta Co., Ltd.
    • Yasushi Tanijiri
    • G02 - OPTICS
  • Information Patent Grant

    Image display device
    • Patent number 6,144,476
    • Issue date Nov 7, 2000
    • Minolta Co., Ltd.
    • Yasushi Tanijiri
    • G02 - OPTICS
  • Information Patent Grant

    Overhead projector
    • Patent number 5,911,490
    • Issue date Jun 15, 1999
    • Minolta Co., Ltd.
    • Takatoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Projecting optical device
    • Patent number 5,683,161
    • Issue date Nov 4, 1997
    • Minolta Co., Ltd.
    • Takatoshi Ishikawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

  • Information Patent Application

    SCREEN IMAGE OBSERVING DEVICE AND METHOD
    • Publication number 20020001397
    • Publication date Jan 3, 2002
    • TAKATOSHI ISHIKAWA
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    DISPLAY APPARATUS
    • Publication number 20010045919
    • Publication date Nov 29, 2001
    • TAKATOSHI ISHIKAWA
    • G06 - COMPUTING CALCULATING COUNTING